| 摘要 |
The invention concerns a method for adaptive control of multichannel acoustic echo cancellation system comprising N speakers HP>i< (i = 1, 2, , N), N being an integer not less than 2, and M microphones MC>j< (j = 1, 2, , M), M being an integer not less than 1. The system comprises NxM identification filters Fi>j< with variable coefficients, the identification filter Fi>j< enabling to estimate the acoustic coupling between the speaker HP>j< and the microphone MC>j< based on a pitch mu adapting the variable coefficients. The pitch mu adapting the variable coefficients is based on the presence or absence of signal in the speakers HP>k (k≠i)<. The invention is applicable to the hands-free use of communication tools.
|
